【英文标准名称】:CheckValvesforFire-ProtectionService
【原文标准名称】:防火设施用止回阀
【标准号】:ANSI/UL312-2003
【标准状态】:作废
【国别】:美国
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:防火;管系统;消防水管;止回阀;防火安全;阀门;消防喷水器
【英文主题词】:Checkvalves;Fireprotection;Firesafety;Firesprinklers;Pipingsystem;Valves;Waterconduitsforfireextinguishing
【摘要】:ProposedNewEditionforUL312
【中国标准分类号】:C84
【国际标准分类号】:13_220_20;23_060_50
【页数】:
【正文语种】:英语


【英文标准名称】:Safetyofpowertransformers,powersupplyunitsandsimilar-Generalrequirementsandtests
【原文标准名称】:电力变压器、供电设备及类似设备的安全性.一般要求和试验
【标准号】:BSEN61558-1-1998
【标准状态】:作废
【国别】:英国
【发布日期】:1998-01-15
【实施或试行日期】:1998-01-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:电力变压器;变压器;主变压器;电气安全;一般条件;性能;电源设备;机械安全;供电系统;试验;防火安全;安全;安全要求;定义;规范(验收);电气工程
【英文主题词】:Definition;Definitions;Electricalengineering;Electricalsafety;Firesafety;Generalconditions;Mainstransformers;Mainsunits;Mechanicalsafety;Performance;Powersupplysystem;Powertransformers;Safety;Safetyrequirements;Specification(approval);Testing;Transformers
【摘要】:1ThisInternationalStandarddealswithallaspectsofsafety(suchaselectrical,thermalandmechanical)of:a)Stationaryorportable,single-phaseorpolyphase,air-cooled(naturalorforced)isolatingandsafetyisolatingtransformers,associatedorotherwise,havingaratedsupplyvoltagenotexceeding1000Va.c.andratedfrequencynotexceeding1MHz,theratedoutputnotexceedingthefollowingvalues.NOTE1-Forhigherfrequencies,thisstandardmaybeusedasaguidancedocument.Forisolatingtransformers:-25kVAforsingle-phasetransformers;-40kVAforpolyphasetransformers.Forsafetyisolatingtransformers:-10kVAforsingle-phasetransformers;-16kVAforpolyphasetransformers.Theno-loadoutputvoltageandratedoutputvoltagedonotexceed:-forisolatingtransformers500Va.c.or708Vripplefreed.c.NOTE2-Forisolatingtransformers,theno-loadratedoutputvoltagemaybeupto1000Va.c.or1415Vripplefreed.c.tobeinaccordancewiththenationalwiringrulesorforspecialpurposes.-forsafetyisolatingtransformers50Va.c.r.m.s.and/or120Vripplefreed.c.betweenconductorsorbetweenanyconductorandearth.NOTE3-Isolatingandsafetyisolatingtransformersareusedwheredoubleorreinforcedinsulationbetweencircuitsisrequiredbytheinstallationrulesorbytheappliancespecification(forexampletoys,bells,portabletools,handlamps).Ratedvaluesforeachtypeoftransformerareindicatedintherelevantpart2.b)Stationaryorportable,single-phaseorpolyphase,air-cooled(naturalorforced)separatingtransformers,auto-transformers,variabletransformersandsmallreactors,associatedornot,havingaratedsupplyvoltagenotexceeding1000Va.c,aratedfrequencynotexceeding1MHz,aratedno-loadorloadoutputvoltagenotexceeding15kVa.c.ord.c,andforindependenttransformersnotlessthan50Va.c.and/or120Vripplefreed.c.andaratedoutputnotexceedingthefollowingvalues:c)-1kVAforsingle-phasetransformers;-2kVARforsingle-phasereactors;-5kVAforpolyphasetransformers;-10kVARforpolyphasereactors;unlessotherwisespecifiedintherelevantpart2.NOTE1-Separatingtransformersareusedwheredoubleorreinforcedinsulationbetweencircuitsisnotrequiredbytheinstallationrulesorbytheappliancespecification.NOTE2-Thetechnologicaldevelopmentoftransformersmightimplyaneedtoincreasethehigherlimitoftheratedfrequency.NOTE3-Normally,thetransformersareintendedtobeassociatedwithequipmenttoprovidevoltagesdifferentfromthesupplyvoltageforthefunctionalrequirementoftheequipment.Thesafetyinsulationmaybeprovided(orcompleted)byotherfeaturesoftheequipment,suchasthebody.Partsofoutputcircuitsmaybeconnectedtotheinputcircuitortoprotectiveearth.c)Powersupplyunitsincorporatingatransformeroftypesa)orb).NOTE1-Thismayincludeunitsfortransforming,rectifying,converting,frequencyinvertingortheircombinationsintendedforpowersupplyingelectricalequipment,exceptforswitch-modepowersupplies.NOTE2-Examplesofpowersupplyunitsaretransformers,batteryeliminatorsandconvertersforbuilding-inorself-contained.Inthelattercasetheycanevenbeprovidedwithintegratedpins,intendedtobeintroducedintofixedsocket-outlets.NOTE3-Requirementsfortransformersforswitch-modepowersuppliesarecontainedinIEC61558-2-17.2Thisstandardisapplicabletodrytypetransformers.Thewindingsmaybeencapsulatedornon-encapsulated.NOTE1-Fortransformersfilledwithliquiddielectricorpulverisedmaterial,suchassand,requirementsareunderconsideration.Thisstandardisalsoapplicabletotransformersassociatedwithspecificitemsofequipment,totheextentdecideduponbytherelevantIECtechnicalcommittees.Transformersincorporating
【中国标准分类号】:K41
【国际标准分类号】:29_180
【页数】:136P.;A4
【正文语种】:英语